Sucker-rod rotor



SUCKER ROD ROTOR Filed Oct. 51, 1922 2 Sheets-Sheet l J/m//wfog: DEL BERTy fz HXELSON,

HTTORAEYH July 12, 1927. 1,635,776

D. F, AXELSON SUGKER ROD ROTOR Filed Oct. 51. 1922 a 2 Sheets-Sheet 2 fd". M3/50E..-

Patented .Idyll-112,192? l.'

'UNITI-:p: -sTATEs PATENT OQFFIC.

DELBEBT F. AXELSON, OF LOS ANGEL'S, CALIFORNIA, ASSIGNOB T0 AXELBON IACHINE CO.,`A CORPORATION 0F CALIFORNA.

sucinta-non Romea.

ppiioat'ion med amber si, ma. serial No. usarse.

My rticularly to oil well pumping equipment. pump now extensively employed for the purpose of pumping oil from wells consists of t; a steel barrel which is placed at or near the bottom of the well at the end of a line of tubing, and in which steel barrel an accurately ground cylindricalsteel plun er, havin valves therein, is reciprocate It is quite common for the barrel of such pumps to wear slightly out .of round, thus causing an elongated cross section of the plunger and barrel to result, instead of preserving a'tiue circular cross section such as results l5 from an equal distribution of the wear over the surfaces of the barrel and plunger. The

confinement of thewear between reciprocating parts to any one area soon causes a space to occur between\the lunger and the barrel, with the result of leakage of theoil past the .plunger and .an inefficient operation of theA pumping eouipment.

It is an o ject of my linvention to provide a device for slightly rotating the reciprocating members of a lpump at each reciprocation thereof, so that the wear of the parts will not be confined to any particular area,

but willbe distributed over the entire sur-- faces thereof. j,

It isa further object of the invention to provide a device of this character which may be employed with the standard form of pumping equipment.

The especial advantages of the invention and further objects thereof will be made evident hereafter.

Referring to the drawings which are for illustrative purposes only,

' Fi 1 is a fragmentary .viewshowing a packing head, having a polished rod of an oil pump extending therethrough upon which is mounted a rotating device, embodyling the features of my invention.

Fig. 2 is an enlarged fragmentary sectional view, of the reciprocating device shown in Fig. 1, taken from substantially the same position as Fig. 1. '1

Fig. 3 is a section taken upon a plane represented by the line 3-3 of Fig. 2.

Fig. 4 is a side elevation, partly in section, of' the mechanism shown in Fig. 1, as attached to a walking beam, and in operative invention relates to pumps and par-i' relation to standard delivery iping which encloses a pump at, or near, t e bottom of a well..

1n oil well/pumping equipment it is customary .to install a packing head 11 upon` the upper end of a string of. tubing 12, which includes .a T 12a connectin with an oil delivery pipe 12b passing through a casing head 12s, and is connected by means of a union 12d to a pump barrel 13, as shown in Fig. 4.'. The packin Fig. 1, is provided with a gland nut 14 by which the packing contained therein may be compressed to provide the desired seal head 11,shown in l `around the reciprocating polished rod 15,

which operates through the packing head and is connected with a plunger 15 which works in the pump barrel 13. The packing.

head -11 is provided with diametrically outstandingarms 16, these arms having a utility -which will be made evident hereinafter.

^ Upon the polished rod 15, a head 18 is clamped. by means of clamp plugs,19, provided with nuts 20. Upon the lower'end of the head 18 ratchet teeth 21 are formed which are adapted to be engaged by spring retained pawls 22 which operate in projections 23 formed diametrically on a ring 24 which fits over the ratchet teeth 21. Below the head 18and separated therefrom by a washer 26 is disposed a yoke 28 provided.v with a hole y29 through which the polished rod 15 extends. r1`he standard lifting reins 30, which are employed wit-h 'regular pumping equipment, are pivotally connected in the usual manner to the walking beam 30- of an oil well rig and the pins 31 formed upon the yoke 28. As the walking beam 30L of the pumping equipment is reciprocated,

the polished rod and the reciprocating elerecipments attached thereto are verticall rocated owing .to the fact that the ead 18 rests upon the yoke 28. v A

Surrounding the lower part of the head 18, is placed a sleeve 35 having vertical slots 36 therein which slide over the extend-i ing arms 37 of the yoke 28, and further having a pair of oppositely disposed helical slots 39, through which the projections 23 of the ring 24, extend. A collar 40 is held upon each of the projections 23 by a cap'nut 41 which also compresses springs 42 against the pawls 22. The collars 40 are of a diameter substantially equal to the width of .a small angular distance.

the slots 39, and receive the wear due to slidin against the walls ofwthe slots 39.

' on the lower end of the sleeve 35, brac ets 45 are bolted from which connecting rods 46 extend downwardly throu` h holes provided in the arms 16 of the pac ing head ll. The rods 46 have the utility of causing the sleeve 35 to slide relatively up and down upon the head 18 as the polished rod is reciprocated, and stop nuts-49 and 50 are provided for limiting the movement of the arms 46 through the arm 16, a spring 5l being provided between each of the nuts 50 and the arms 16.

In Fig. 1 the polished rod and t-he head 18 are shown in their lowest position. In such position the springs 51 are compressed between the nuts 50 and the arms 16, and the sleeve 35 is forced upwardly, into its highest position relative tothe head 18. In this relative position between the sleeve 35 and the head 18 the projections 23 are in the bottom ot the slot 39. As the head 18 is lifted upwardly, the sleeve 35 travels therewith, in substantially the same relative position as shown in Fig. l, until the nuts 49 come intocngagement with the underside of the extending arms 16, thus stopping the movement et the sleeve 35, whereupon the head 18 continues to travel upwardly therethrough. The nuts 49 are placed upon the lower ends olf the connecting rods 46 in such position that they will not engage the arms 16 until the head 18 has nearly reached the full extent of its upward stroke, so that when the upward stroke is completed the projections 23 will occupy intermediate positions in the slots 39, as indicated by the dotted lines 55.

It will be perceived that as the head 18 moves upwardly within the sleeve and the projections 23 are carried upwardly within the slots 39 that the ring member 24 will be rotated in the direction indicated by the arrow 56, and, due to the engagement of the pawls 22 with the last tooth 21, the head 18 and the polished rod will be rotated through As the head travels downwardly, the sleeve follows therewith until the springs 5l strike and are compressed against the arm 16 whereupon the sleeve 35 is raised relative to the head 18 and the projections 23 are brought back to the bottoms of the slots 39 andin being so returned are rotated back to the position shown in Fig. l, the awls 22 riding over the ratchet teeth 21. he slight rotation of the polished rods at each reci rocation is transferred through the string o sucker rods to the plunger of the pump which is lilrewise slightly rotated, thus distributing the wear between itself and the barrel in which it reciprocates. The amount which it is desii-ed to rotate the reciprocating elements at each stroke may be adjusted by positioning the nuts 49 upon the rods46 to give the dew needs of the pumping equipment l. In a device of the class described, the

combination of: a polished rod; a head upon said polished rod; a yoke upon said polished rod adapted to lift said head; an engager adapted to rotate said head; vand a member having sliding engagementl with said engager for rotating said engager as said head and said engager reciprocate with relation to said member.

2. A device, as in claim l, in which said member consists oi'l a sleeve which iits over sald engager and has helicalv slots formed therein, in combination with projections upon said engager resting in said helical slots.

3. A device, as in claim 1, in combina-l tion with means for limiting the movement of said member, so that saidihead and said engager will move relatively thereto.

4. In a device of the class described, the combination of: a polish rod; a head upon said polish rod; a yoke upon said polish rod adapted to lift said head; an engager adapted to rotate said head; a member having sliding engagement with said enc'ager for rotating said engager as said hea and said engager reciprocate with relation to said member, said member comprising a sleeve which lits over said engager and has inclined slots formed therein; projections on said engager resting in said slots; and means for limiting the movement of said sleeve so that said head and said engager will move relatively thereto. v

5. In a device of the class described, the combination of: a polish rod; a head upon said polish rod; a yoke upon said polish rod adapted to lift said head; an engager adapted to rotate said head; a member having sliding engagement with said engager for rotating said engager as said head and said enga er reciprocate with relation` to said mem er, sai member comprising a sleeve which fits over said engager and has inclined slots formed therein; projections onsaid engager resting in saidslots; and means for limiting the movement of said sleeve so that said head and said engager will move relatively thereto, said limiting means comprising members extending from said sleeve, a stationary member adapted to beI slidably engaged by said extending mem- 6. In a device of the class described, the

combination of: a polish rod; a head upon said polish ro/d; a yoke upon said polish rod; a yoke upon said polishrod adapted to lift said head, an engager adapted. to rotate said head; a member having sliding engagement with said engager for rotating said engager as said head and said engager reciprocate with said member comprising a sleeve which fits over said engager and has inclined slots formed therein; rojections on Said engager resting in said s ots; and means for limiting the movement of said sleeve so that said head and said engager will move relatively lformed thereupon, said thereto, said head having ratchet teeth engager comprising pawls which engage said ratchet teeth. p

7. In a device of the class described, the combination of: a polish rod; a head upon said polish rod; a yoke upon said polish rod adapted to lift said head; an engager adapted to rotate said head; a member having sliding engagement' with s aid engager for rotating said engager as said head and l said engager reciprocate with relation to said member, said member comprising a sleeve which its over said engager and has inclined slots formed therein; projections on said engager resting in said slots: and means for limiting the movement of said sleeve so that said head and said engager will move relatively thereto, said limiting means comprising members extending from said sleeve, a stationary member adapted to be slidably engaged by said extending members and adjustable stops upon said extending members, said head having ratchet teeth formed thereupon, said engager comprising aring mounted upon said head and yieldable pawls for engaging said ratchet teeth.

8.'Ina device of the class described,the combination ofz-a polish rod; a head upon said polish rod; a yoke upon said polish rod adapted to lift said head; an engager adapted to rotate said head; a member havingsliding engagement' with said engager for rotating said engager as Isaid head and said engager reciprocate with relation to ysaid member, said memberl comprising a sleeve which ts over said. engager and has inclined slots formed therein; projections on said engager resting in said slots; and means for limiting the movement of said sleeve so that said head and said en ager will move relatively thereto, said limiting means coinprising members exten-ding from said sleeve,

a stationary member adapted to be slidably engaged bysaid extending members and adjustable stops upon said extending members, said head having ratchet teeth formed thereupon, said engager comprising a ring mounted upon ysaid head and yieldable relation to said member,-

pawls for engaging said pawls bein disposed in said projections.

9. In a evice of the class described, the combination of: a polished rod; a head upon said polished rod; means for reci said polished rod; an engager a ratchet` teeth, Isaid rocating apted to rotate said head; and a member having slidd ing engagement Withsaid engager fory rotating said engager as. said head and said engager reciprocate with relation to said member.

10. Ina pump, the `combination of: a polished rod; a head secured to said polished rod; a yoke so placed as to support said head; a Walking beam; said yoke being dependingly supported from the walking beam; an engaging member; means by which said engaging member turns said head in a positive direction and turns freely Without engaging said head in a negative direction; well tubing; a member fixed with relation to the tubing of. the Well in which the polished rod is reciprocated by the walking beam; and means by which said fixed member turns said engaging member.

Il. In a device ofthe class described, the combination of: a polished rod; a head secured to said polished rod; a yoke so laced as to support said head; a Walking eam; said yoke being supported from the Walking beam; an engaging member; means by which said' engaging member turns `said head in a positive direction and turns freely Without enga ing saidV head in a negative direction; a s eeve surrounding said engaging member and having inclined slots engaging projections on said engaging member; means for preventing said sleeve from turning with said head; and means for preventing said sleeve from reciprocating with said head during aportion of the pump stroke. j f) 12. In a device of the class described, the combination of: a polished rod; a head secured to said polished rod; a yoke so placed as'to support said head; a Walking beam; said yoke being supported from the Walking beam; an engaging member; means by DELBERT F. AXELsoN.

I CERTIFICATE or connexion.

Patent No. i.,635,7%. 'Granted July l2, 1927, to

DELBERT fr. AxEwoN;

It is hereby certified thst error appears in the printed specification of the sbove numbered patent requiring correction ss follows: Page 3, line 6, clsim 6,

strike out the words "s yoke upon ssid polish rod"; same page, line 121, clsim 12, alter the word "head;" insert the words and semi-colon "well tubing;"; snd that the said Letters Patent should be re'sd with these corrections therein thst the sume may conform to the record of the cs se in the Patent Uffice.

Signed and sesled this 16th ds! of August, A. D. 1927.

M. J. Moore, Seal. Acting Commissioner of Pstents. 

